EVALUATION OF METHODS FOR SHADED SURFACE DISPLAY OF CT VOLUMES

被引：58

作者：

MAGNUSSON, M ^{[1
]}

LENZ, R ^{[1
]}

DANIELSSON, PE ^{[1
]}

机构：

[1] LINKOPING UNIV,DEPT ELECT ENGN,S-58183 LINKOPING,SWEDEN

来源：

COMPUTERIZED MEDICAL IMAGING AND GRAPHICS | 1991年 / 15卷 / 04期

关键词：

3D VOLUMES; SHADED SURFACE DISPLAY; VISUALIZATION; ARTIFACTS; 3D-GRADIENT ESTIMATION; SUBVOXEL LOCALIZATION;

D O I：

10.1016/0895-6111(91)90083-8

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

There are several ways to compute a shaded surface display of radiological 3D density volumes. In this paper we evaluate 12 methods which are different combinations of principles for detection of the surface to be displayed (gray-value threshold, gradient threshold, zero-crossing of 2nd derivative), localizing this surface in space (grid-point accuracy, subvoxel accuracy) and finally estimating the direction of the surface normal (from the gradient in the 2D depth image, from the gradient in the 3D-volume). The best quality is obtained by zero-crossing detection, subvoxel localization, and 3D-gradient orientation.

引用

页码：247 / 256

页数：10